EAB is responsible for the death of tens of millions of ash trees in 30 states, and has become a concern for Colorado communities since its initial detection in Boulder, as 15 percent or more of all urban and community trees in the state are ash. She says uncertainty about the possible extent of EAB infestation is due to the difficulty in detecting the pest, which can infest an ash tree for up to four years before visible signs of decline occur in the tree. In Colorado, this pest has only been detected in Boulder County, but some municipalities outside the county have been actively managing for EAB — including chemically treating ash trees — for years.
SavATree Preventive and Curative Treatments Will Help You Manage This Crisis
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Subscribe to the "The Sapling" on the Davey Blog for the latest tips to keep your outdoor space in tip-top shape throughout the year. Flashback to A tiny, exotic beetle, identified as emerald ash borer , was just discovered in Michigan. By , EAB killed an estimated 58 million ash trees in thirteen states, according to Dr. EAB was once thought to be a death sentence for your trees. You can treat EAB and save your ash trees.
Treatment of EAB
Emerald ash borer insecticide treatment considerations. Several insecticide products are available to homeowners for control of emerald ash borer EAB. Since the presence and infestation level of EAB is quite difficult to determine at early stages of an infestation, insecticide treatments may be merited to mitigate damage by EAB. However, not all ash trees should be treated as some may be too extensively compromised or in poor condition to receive treatment. Tree location, value, and health, as well as the cost of treatment are all factors to consider. Due to the expense of yearly insecticide treatments, one should consider the value of a particular ash tree in relation to insecticide treatment costs before making any treatments.
The emerald ash borer EAB was first discovered in the U. The EAB has since killed tens of millions of trees in the United States and so far has established itself in 26 states. The Asian beetle infests and kills native North American ash species Fraxinus sp. From late May though early August, the beetle deposits its tiny eggs along the lower portions of the main branches and the trunk of the ash, as well as inside any cracks or crevices. Upon hatching, the emerald ash borer larvae damage the host tree by tunneling S-shaped galleries into the underside of the bark and the outer sapwood.